https://mail.knoppix.net/wiki3/index.php?action=history&feed=atom&title=CatCat - Revision history2026-09-16T02:48:23ZRevision history for this page on the wikiMediaWiki 1.23.3https://mail.knoppix.net/wiki3/index.php?title=Cat&diff=8180&oldid=prevEadz: Reverted edits by 203.158.221.227 (Talk); changed back to last version by Dr Kludge2008-07-15T05:29:29Z<p>Reverted edits by <a href="/wiki/Special:Contributions/203.158.221.227" title="Special:Contributions/203.158.221.227">203.158.221.227</a> (<a href="/wiki3/index.php?title=User_talk:203.158.221.227&action=edit&redlink=1" class="new" title="User talk:203.158.221.227 (page does not exist)">Talk</a>); changed back to last version by <a href="/wiki/User:Dr_Kludge" title="User:Dr Kludge">Dr Kludge</a></p>
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</table>Eadzhttps://mail.knoppix.net/wiki3/index.php?title=Cat&diff=8174&oldid=prev203.158.221.227: zelacbocbasn2008-07-15T03:06:52Z<p>zelacbocbasn</p>
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</table>203.158.221.227https://mail.knoppix.net/wiki3/index.php?title=Cat&diff=7004&oldid=prevDr Kludge: Init from PHPWiki2005-09-24T13:40:43Z<p>Init from PHPWiki</p>
<p><b>New page</b></p><div>cat: Concatenate<br />
<br />
cat filename...<br />
where filename... may be one or more files.<br />
cat displays the content of filename... on the standard output. If more than one file is used, they are displayed one after the other creating a larger file.<br />
<br />
Output redirection may be used to copy the contents of files into another file. An example is<br />
<br />
cat *.c > tot.cprog<br />
This will copy the contents of all files ending with .c, into file tot.cprog. The order of the files within tot.cprog will be alphabetical.<br />
<br />
cat can be used to append one file to another:<br />
<br />
cat file2 >> file1<br />
will append file2 to file1.<br />
<br />
The [[cat]] command can also be used in pipe sequences or used to create files in shell scripts.<br />
cat - > mynewfile.txt << CATEOF<br />
line 1<br />
line 2<br />
line 3<br />
CATEOF<br />
The -, dash, is used to take input from the keyboard or in the case of this shell script example from all the lines following the [[cat]] line. Notice how '''<< CATEOF''' is used. The '''<<'' tells the shell script to that input is going to be taking from lines in the shell script while the -, dash, tells [[cat]] to read from the stdin. '''CATEOF''' is just some sequence of characters that you invent. The token name means [[cat]] End Of File. In this example, the script starts to look for a matching '''CATEOF''' search token. The closing search token must start at the first character on the line.<br />
<br />
[[Category:Useful Linux Commands]]</div>Dr Kludge